Question

can someone tell me how to add this php code:

<?php  include('shopping_cart_temp.php'); ?>

Into this javascript line:

$('.cart_status').append('<p class="json-productname">' + retObj.product_name );

Answer 1

More specifically,

$.get('shopping_car_temp.php', function(result){
   $('.cart_status').append('<p class="json-productname">' + result );
});

In your shopping_car_temp.php file, echo only retObj.product_name. If you need to echo multiple things, you may want to format them as JSON objects. You can read about those at: http://api.jquery.com/jQuery.get/